Patents Assigned to United Kingdom Nirex Limited
  • Unitary double ring seal
    Patent number: 6557858
    Abstract: A double ring seal of unitary construction is made from a resilient deformable material. The ring seal comprises two coplanar sealing rings for use in sealing between two substantially planar surfaces, and means interconnecting the rings, such that an interspace volume is formed between the rings when the seal is in use.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: May 6, 2003
    Assignee: United Kingdom Nirex Limited
    Inventors: Neil Anthony Carr, Trevor Norman Walker
  • Repository for radioactive waste-vault backfill
    Patent number: 5740546
    Abstract: A method of forming a repository for radioactive waste comprises locating the waste in a subterranean vault and backfilling the vault with a filling material which is water permeable and provides a substantial reservoir of available alkalinity such that any ground water permeating through the filling material to the waste has a pH of at least 10.5.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: April 14, 1998
    Assignee: United Kingdom Nirex Limited
    Inventor: Alan James Hooper